Improved preserve-jar



c. F. SPENCER.

.Prjservev vJalr. 1

Patented Feb. 10. 1863.

UNITED States FATENT Utrina.

GHARLES F. SPENCER, OF ROCHESTER, NEW YORK.

IMPROVED PRESERVE-JAR.

Specificu tion forming part of Letters Patent No. 257,6417, datcdFebruary 10, 1863.

To all whom, it may concern:

Be it known that I, CHaRLns F. SPENCER, of Roehester, in the county ofMonroe and State of New York, have inventeda new and useful Improvementin Self-Sealing Preserve- J ars; and I do hereby deelare that thefollowing is a full and exaet description thereof, reference being hadto the aceompanying drawings, making part of this specification.

Fi gure 1 is a central longitudinal vertical seetion of my improved jar;Fig. 2,2. perspective view of the cover inverted and with the pack.-ing-ring detached; Fig. 3,a plan of the packingring detached from thecover; Fig. et, a modification of the stopper in section.

Like letters designate corresponding parts in all the figures.

My invention consists in the arrangement of the stopper, provided with aring of rubber or other suitable packing, forming a rim or flangeprojecting suificiently beyond the edge of .the cover to pack tightlybetween it and the neck of the jar, and in a suitable seat providedwithin the mouth, as hereinafter described.

"s The jar A ma-y be of ordinary form and con- A slightly conical, sothat the stopper will pack more tightly as it is driven in, and it isalso provided with a suitable seat, a, at the proper position Within theneck for the stopper to strike on when in place. The stopper is intendedto be inserted in and removed from the mouth of the jar similarly to theordinary stopper of the bottle, and to pack the joint so tightly as to-hermetically inclose the contents of the jar under all conditions. Tothis end it is composed of two partsthe cover B proper, and a ring, b,of india-rubber orother equivalent material, seeured thereto. The coverB is made in a single piece, and preferably of poreelain, glass, orearthcnware, so as to 4resist the action of the acids of the fruitinclosed, though, if desirable, it may be made tending entirely aroundthe circumference, as represented in Figs. 1 and 2, and into this grooveis fit-ted the paeking-ring b, Figs. 1 and 3, of such size that it willfill the groove closely by its elasticity, and project at the same timeeonsiderably beyond the edge of the cover, so as to furnish suffieientsurface for the pack'- ing. The cover B, thus provided with the groove(Z in its periphery, has two flanges or rims at its edge, one above andthe other below the rubber. The diameter of the flange f above is alittle less than the diameter of the mouth of the jar in which thestopper fits, so as to leave sufficient space for the thieknessof rubberto serve as packing, while the diameter of the tlange g below is alittle less than that of the opening in the seat a of the jar, so thatit will not strike thereon as it is pressed down, but still fill thewhole space, so as to shut off the rubber as much as possible from thefruit below. Thus arranged, when the stopper is inserted in place, theprojeetion of rubber outside the flange f is compressed against the neckof the jar so tightly as to exclude the ingress of air, and turns upint'o the position shown in Fig. 1, furnishing a broad bearing againstthe neck of the jar, being always sustained in place by the said flange.This broad bearing furnishes a Secure paeking under all conditions, sothat the jar may be moved or transported with safety.

-The advantage of a cover made in a single .piece with the paekingseeured to it as described is apparent.

The device is exceedingly cheap, and its simplicity is such that itcannot become disarranged or inoperative. It is readily inolded or cast,and when thus formed is perfectly' tight, having no j oints throughwhich air may find ingr'ess, as is the case where it is composed ofseveral parts that have to be joined together, and it requires nofitting, as in such cases. The rubber is easily applied by stretching itover' the edge, and when in position fills the groove closely. Theflangc gof the cover, by filling the space inclosed by the seat of thejar, eifectually and entirely excludes the rubber from contact with thefruit, by which the taste of the latter is affeeted orthe vitality ofthe packing inj ured. By being made in a single piece the cover is notliable to become strained by removal from the jar, so as to open thejoints, as is frequently the case in other devices. A Stopper thusconstructed Wililast for many years.-

Fig. etshows a modification of the Stopper, in Which an entire disk ofrubber is used, Secured between two disks of metal plate suitablySecured together.

\Vhat I claim as my invention, and desire to Secure by Letters Patent,iS-- rhe combined arrangeinent and construction of the donble-flangedcover B, packing ring b, and jar-neck Seat a, one fiange, f, of

the cover coinpressing and tightening the packing-ring, and the otherflange, (1, nearly filling and closing` the circle Within the Seat,snbstantially as and for the purposes herein spccified.

In Witncss Whereof I have herennto signed iny name in the presence oftwo subscrbng witnesscs.

CI-IAS. F. SPENOER.

J. FRASER,

! i \Vitnessesz 4 R. F. OsGoon.

